Illuminated push button switch



April 18, 1961 Filed Aug. l5, 1958 H. c. GoHs ET AL 2,980,784

ILLUMINATED PUSH BUTTON swITcH 3 Sheets-Sheet 1 @www April 18, 1961 H. c. GHS l-:TAL 2,980,784

ILLUMINATED PUSH BUTTON SWITCH Filed Aug. l5, 1958 5 Sheets-Sheet 2 35 n How/HPD I 32 ByLoe/MEE' P59001@ MMMMM April 18, 1961 H. C. GOHS ET AL ILLUMINATED PUSH BUTTON SWITCH Filed Aug. l5, 195B I/@Ti 3 Sheets-Sheet I5 INVENTOR. Ho WARD Cf Gok/5.

BY LoP/ME/PPBEoO/f diameter.

2,980,784 ILLUMINATED PUSH eUrroN swrrcH Howard C. Golls, Syosset, and Larimer P. Brooks, Brian clin Manor, NSY., assignors to Trine Manufacturing Corporation, New `ltork, NX., a corporation of New York Fiied Aug. 15, 1958, Ser. No. 755,275

13 Claims. (Cl. 200e-159) This invention relates to iluminated push button switches and particularly to illuminated push button switches intended to replace non-illuminated push button switches which are ush mounted on a plate or other support. i

Miniature push button switches, generally of the type disclosed in United States Patent No. 1,699,491, are

well known Vand many thousands of such switches are` of illuminated switches particularly for the operation of door bells.

Illuminated switches of various vtypes are available, but they are unsuitable, because of their shape Y and/orsize, for replacing push button switches of the above-mentioned type.

Thus, as pointed vout above, the push Vbutton 'switches frequently are flush mounted `through holes in metal plates, and itis not practical to enlarge the hole to receive a push button switch of larger Furthermore, the cost of the plates is a large proportion of the cost of an installation, and some of the plates, e.g. the mail box plates commonly employed in apartment houses, are relatively large vand are severalA times more expensive than the push button switch itself. Also, in some cases several push buttonrswitchesare mounted on a single large plate. lf flush mounting is ato be` maintained without Areplacement of the plates, the Y replacement push'button switch. must be small enoughand of aaconguration which will permit mounting it in the holes in the existing platesand substantially tiush .with the exterior ofthe plate. l Y

vDue to the variety of belly transformers employedVv in the various installations, `the voltage available fortheV operation'of an illuminating 'lamp varies over a range'of several volts, eg. l`624 volts.` It isf-not practical or economical-to providea different p ush button switch having a different lamp for eachinstallation, and therefore, a lamp intended for use in existing installations must provide sufficient illumination for a switch under widely varying voltageconditions. Y The smallest available lamp -1 .whichis-lowin cost andjwhich will meetthese requirev`4ment is a type Gli-4764 lamp sold by the General Elec- .Y tric Co.,` New YorlgyNew York, and Vis approximately. ,'sevemthirty-s'econds of an" inchfin diameter `antiche-half inch long,excludir 1g the pig-tail leads which lextend from. kf the'baseof-the lamp. l

It ywillvbeapparent, therefore, that it is d icult toa' l constructwa push button switch whichwill replace the' l known-type of push button switch and which contains lai1"*"'.

illuminating lamp suitable for use in existing installations.

Such illuminatedpush button swit'cli'must also beadapted '70 V`for esbnprnicalgmass. manufacture and. accordingly. can- 2,980,784 Patented Apr. l, 1951 not be diicult to assemble or require the maintenance of dimensions within close tolerances. Furthermore, light pressure, current carrying contacts and non-wiping, circuit controlling contacts should be avoided if reliable operation is to be obtained. Considerable effort has been devoted over an extended period of time to the solution of the problem, and the embodiments of the invention disclosed herein provide an illuminated push button switch which is well suited for the replacement of push button switches of the above-mentioned type. Of course, it will be obvious that the push button switch ofthe invention may be used alsoin new installations.

One object of the invention is to provide an illuminated push button'switch which is `suitable for the replacement of known types of non-illuminated, ush mounted push buttons of small size.

Another object of the invention is to provide an illu1ninated push button switch which is small in lsize and yet is simple and economical to manufacture and'easy to assemble. 1

A further object of the invention is to provide a push button switch of small size and containing an illuminating lamp'whi'ch may be simply and economically replaced.

Other objects of the invention will be apparent from the following detailed description of the manner in which we now prefetto practice the invention, which description refers to the accompanyingdrawings .in which:

Figs. 1 and 2 are cross-sectional, side elevation views, on an enlarged scale, of the preferred embodiment of the push button switch of the invention;

'Figs 3 and 4 are cross-sectional, plan views, taken` respectively along the lines `3 3 and 4-4 indicated -in Fig. l,v of the preferred embodiment shown in Figs..V

1 and 2;

" Figs. Snand 6 are fragmentary, Vcross-sectional, side4 elevation views of portions of the embodiment shown in Figsrl and 2;

Fig. 7 is an exploded view, with the illuminating lamp omitted, of the parts ofthe embodiment shown in the preceding figures; l

Fig. 8 is a cross-sectional side elevation view, `:of a" further embodiment of the illuminated push button yswitch of the invention; Y

Fig.9 is a. perspective view of one of `the electrical connecting terminals employed as part ofthe embodiment shown in Fig. 8;

Fig. 10 is a cross-sectional side ,elevation view of a further embodiment of the illuminated push button switch` of the invention; and

Fig. 14 is a-perspective view of the lamp holdingclip forming part of the embodiment shown in Fig. 13.

The embodiments shown in the several figures of the drawings Aare illustrated in greatly enlarged scale for *Y clarity in illustration, it being understoodthat thefactual'` embodiments` of the push button switches to be used for.' i replacement purposes are only approximately `one-fourthl the size of the switches shown in the drawings." How?Y ever,it will also be understood that illuminatedfpuslrl' button: switches' Vembodying the invention may be of any desired size.

' Thepreferred embodiment of the vinvention Aillustrated l in Figs. 1-7 Vcomprises a tubular, Vcylindrical 'shell 1i)4 l' and a lfriction iing'er'meniber 11,lthesefelementsof 'ther j Y push fbutton switch being'cornmonly employedJ-inltheff- Y prior artpush -lnitgtcrr'iV switches describedfaboveta'nd hav move as unit. lingers 26 and 27 and isV mounted between the lingers and' Yshell '10...

from adjacent the inner end of the shell toward the@ outer end of the shell 10 and adjacent the exterior thereof.

The lingers 14 are compressed when the push Vbutton switch is pressed into the aperture in the mounting plate 12 and the lingers 14 bear against the wall of the aperture in the mounting plate 12 and .maintain 'the push button switch in the desired position. V v

A second rim or flange 15 extends radiallyinwardly from the inner end of the shell 10 and a pair of securing tabs 16 and 17 extend axially or longitudinally from the.

rim orange 15. The rim 15 defines a central or coaxialropening 1S and the rim 15 is provided with a pair ofrapertures 19 and 2l) to Vpermit the passage of theV contact lingers hereinafter described therethrough.

The Avlinger member 1,1 alsohas a central opening 21 therein, has la pair of apertures 22 and 23 for receiving the securing tabs 16 and 17 and has a pair of apertures 24 and 25 which permit passage of the contact lingers 26 and 27 therethrough. The contact fingers 26 and 27 aremade of conductive material, such as metal, and preferablyyare made of a resilient metal such as beryllium copper.. The lingers 26 and 27 extend longitudinally or axially of the shell 10, are lie-xible and have a pair of free ends 28 and 29. At their opposite ends the lingers 26 and 27 are secured to, and preferably are integral with, a conductive plate 30 having a central opening 31 therein.

A. non-conductivepush button 32.having a hollow d cylindrical portion 33 closed at its outer end by a "trans-` tion134 preferablyA is translucent, it may also be light transparent. The button 32 is mounted with the exterior ofthe cylindrical portion 33 lin sliding engagement with the interior ofthe shell`10 so that when the button 32 is depressed the button 32 remains substantially cofaxially with the shell10.V

The plate 30 which electrically connects the contact lingers 26v and 27 has 'a-pluralit'y of teeth 36 and 37 -at its opposite ends, which teeth36 and 37 dig into the interior wallvof. the cylindrical portion 33 when theplate 3@ is pressedinto the interior of the cylindrical portion 33. Thus, after the plate 30 is assembled with the button 32 the fingers 26 and 27 are mounted'on'the button 32 so that the contact lingers 26 and 27 and the button 32 A helical spring 3S encircles the contact the interior wall of the cylindrical portion 33. The spring 38 bears, ,at one end, against the plate 30 and, at the opposite end, against an insulating washer 32 which 'in` Iturn bears against the inner side of the rim 15'on 'the' mnerrend ofthe. shell .10. Thus, it will be apparent that A in turn bears against the rim 15. The insulating washer 40 has a pair of apertures 41 and 42 therein which receive the intermediate portions of the lingers 26 and 27. The apertures 41 and 42 lare slightly wider in a direction transverse to the radius of the washer 40 than the intermediate portions of the lingers 26 and 27 so that the lingers 26 and 27 may be moved a predetermined distance longitudinally thereof while the intermediate portions of the fingers 26 and 27 are in contact with the walls of the apertures 41 and 42. However, the contactv fingers Z6 and 27 are provided at their free ends with projections 43-46 which are wider between their ends than the widths o f the apertures 41 and 42 so that the ends of the lingers .216 and 27-cannot pass through the apertures 41 and 42.. Since the friction linger member 11 and the shell in preferably are made of metal and since the Contact lingers 26 and 27 should be kept out of contact with the shell 10 and thelinger member 1-1, the apertures 19, Ztl, 24 and 25 therein -are wider than the intermediate portions of the lingers 26 and 27 and the spacing between the walls of the apertures 41 and 4Z in the radial direction is less than the corresponding spacing between the corresponding walls of the apertures 19, 2li, 24 and 25. During assembly of the parts described, thecontact lingers 26 and 27 are bent toward each other as they are passed through the central opening 47 in the washer 40 andv after the projections t3-46 pass throughthe central-opening 4'7 the lingers 26 and 27 are released. After the parts previously described are assembled, the lingers 26 Vand 2;'7y are limited in their outward movement from the shell 10 by the strikingof the projections 43-46 against the `face of the washer all?,

and these so assembled parts form one unit of the push n button switch assembly.

v A. lamp 50, such as the General Electric Company GIE-1764 lamp previously described, is mounted co-axially with the shell 10 and extends longitudinally thereof. The head of the lamp50 extends wi-thinthe shell 1li and thebase 51 thereof extends through the opening 1S in the shell 10, through the opening 21 inthe friction linger member 11 and through theV opening 47 in the washer 40.. The spacing between the head of the lamp 30 and theVK interior of the portion 34 of the button 32,'is such that the interior of the portion 34 does not strike the lamp A when the button 32 is fully depressed. On the other hand, the spacing between rthe head of the lamp 5t! v the button 32 is depressed the yhead of the lamp 50 may pass through thejaperture 31 'without touching the walls .of theV aperture 31; Furthermore, the aperture 31 is and the interior of vthe portion 34 is maintained as small as possible so asY toreduce the projection of the portionY `34 beyond the outer` end of the shell ltoaminimurn. Accordingly, in order to keep the projection v of the portion34 outside of the shell' 10 to a V minimum wher v the button 32 is fully released, Vthe base 51 ofthe lamp i Si) extends exteriorly beyond theinnerhendof the shell 1l?.

The opening 31 in the platej30 is larger than the exterior diameter of thehead ofl thelamp 50 so that when v elongated as'illustratedinFAig; 7.so as -to permit passage the s pring38, which is a compressionspring, acts'l betweenthe shell 10 andthe fingers 26 'and 27 andpurges- `wardly of YtheshellV 10.- The washe'r insulatesthef spring 3.8.and`V the ngers 26 and 2.7with'1espect to the A second'insulating washer 40 ils-'mounted `Q01-axially `of the clips 48 and 49 therethrough with thelamp S0` therebetween. f i The'lamp 50 is held -in place by a pair of identical lamp holdingclips 48 and V49 which are mounted'on the insulating washer 4t. The =clips48 and y49 are oppositely disposed, are mounted intermediate ffthe contact lingers.;26 and 27 and preferably are made'of-metal so as to -aid dissipating the :heatjproduc'ed 'by Ithe larnpA 56 when thelamp 50 is energized. yEach of "the clips 48 and 43 1 is provided with a pair of securing tabs 152 and'53 which pass through the vapertures 54`571intheiwasherl4t f A fter the't'abs 52A and 53 -are passed through the apertures 54+57 they are bent over (Figz')Y so as to rmaintain the c1ps,48 and' 49 in assembled relationship vwith the y washer .40; When the rclips 14S and '49 are-rhountedjon 2' the washer 40 Tand the Washer40"isr assembledas part ot i essere@ the unit previously described, the lower portions of the clips 48 and 49 extend into the interior of the shell as illustrated in Figs. 1 and 2.

The upper portions o-f the clips 48 and 49 are provided with bent end portions 58 and 59 (Figs. 6 and 7) which engage with legs 66 and 61 respectively of the electrical connecting terminals 62 and 63 in the manner hereinafter described.v The lamp 50 is provided with 'a pair of leads or terminals 81 and 82 (Fig. 2) which are inserted between the bent-end portions 58 and 59 and the washer 40 to provide electrical connections between the terminals 62 and 63 and the filament of the lamp Sii. The electrical connecting terminals 62 and. 63 are made of `conducting material, such .as brass, and may be identcal as illustrated in Fig. 7; `Each terminal 62 and 63 comprises a pair of legs 60, 64, 61 and 65j Portions 66 and 67 of the terminals 62 and 63 intermediate .the legs 60, 64, ,61 and 65 form contact surfaces extending at an acute angle to the path of movement of the ngers 26 and 27 yand hence are slidably engageable with the ends 218 and 29 of the contact lingers 26 and 27 when the button 32 is depressed. Thus, Vthe ends o-f the contact iingers 26 4and 27 Wipethe contact surfaces 66 and 67 whenever the button 32 is depressed reducing the possibility of faulty operation due to oxidation Vor corrosion of the contact surfaces 66 and 67 and the ends 23 and 29 of contact fingers 26 and 27. It will be noted that since the portions forming the contact surfaces 66 and 67 are integral with the terminals 62 and 63, they are electrically connected to the terminals 62 and 63.

Each of the terminals 62 and 63 is also provided with holes 68 and 69 having threaded walls for engaging wire securing screws 7i) and-7l. The terminals 62 and 63 may be providedk with longitudinally extending channels 72-and 73 for receiving the ends of connecting wires andV forV holding such ends in place during the turning of the screws 70 and 71 for the purpose of securing such ends to the terminals 62 and 63.

A non-,conducting ,closure member 74, .preferably made Y of a synthetic resin, has a cavity 75 therein for receiving the base 51 o-f the lamp 50. The closure member 74 alsohas a pairof apertures 76 and 77 therein which permit the passage of the vupper portions of, the terminals 62 and 63 therethrough, the closure member 74 being formed` on each slide of the apertures 76 and 77 as shown in Figs. S-and 7vso as to engage the bent ends of the legs 60, 64,61 and V65. The closure member 74 has a pair of .apertures 78 and 79 extending therethrough rate so that when it is assembled with the parts previousand the lamp 50, and `the purchaser may then return the washer Lili, the holding clips 48 and 49 and the lamp 5t) to the seller for replacement or he may merely replace the lamp 50.

When the units are assembled and the tabs 16 and 17 are bent overl as described above, the leg 6i? presses the portion 58 of the clip 48 toward the washer 40 and causes it to firmly engage the lead 82 of the lamp 50. Similarly, the leg 61 causes the portion 59 ofthe clip 49 to rmly engage the lead 31 of thelamp 50.

When the push ybutton switch previously described is installed, the connecting terminals 62 and 63 are connected electrically in serieswith the bell, or other device which is to be operated and with the bell energizing source. It will be noted from an examination of Figures l-7 as Well as from the description previously given that when the terminals 62 and 63 are so connected, the filament of the lamp 50 is connected in series with the bell andthe energy source. The resistance of the lament of the lamp 50 -is such that with conventional bells or chimes and with an energy source'V voltage of approximately 16 to 24 volts, light will be emitted by the ilament of the lamp 50y but the current Viiow is such that the bell will not operate. The light from the lilament of the lamp 50 is transmitted through translucent portion 34 of the push button 32 which `is thereby illuminated.

When the push button 32 is depressed, the ends of the contact lingers 26 and 27 engage the contact surfaces 66 and 67 providing a low resistance shunt circuit between the terminals 62 and 63. The lamp 50 is thereby extinguished'and suliicient current flows inthe bell circuit to produce operation of the bell or other device. When the button 32 is subsequently released, the shunt circuit is interrupted'and the lamp 50 again becomes illuminated.

in the following description of other embodiments of the push button switch of the invention, vpartsV of the switches which are identical with parts described above will be identilied by thesame reference numerals 'and parts which perform the same function as parts previously described, but which diier in shape or structure will be identiiedrbythe same reference numerals followed by aletter such as"a, 1), etc. f

" for receiving the securing tabs v16 and 17. Except for 1yV described the inner endofthe shell ltl'is substantially sealed with respect tothev passage of dust, dirt, water, etc, The connecting terminals 62 and'63 lit snugly` in 'p the apertures 76 and 77 so that when the yterminals ,62 and 63 are pressedor pushed-into the apertures 76 and 77 the closure-member '7l-i in combinationfwith rthe-terminals 62 and 63 form a second unit of the push button switch assembly. f f After .the two units push ybutton switch assembly have been assembled as described above, the closure member- '74 with the terminals 62 and 63 therein is pressed against the washer 4t) with the securing tabs 16 and 17 extending through the apertures 76 and 79; Withthe closure mem` ber 'M iirmly pressed against the washer it?, and, in

some cases against the linger member lll asillustrated in Fig. l, the ends of the securing tabs 16 and 177? are f.

- bent inwardly as illustratedin 2 so as to maintain the ,two units in assembled relationship.

to replace `the lamp VVSi?, thesecuring tabs `i6 andl7 areVv straightened, the inner unit comprising the closure member'iand the terminals 62 and 63 is removed, and the V ends vof the contact fingersV 26 and 27 are pushedtoward each o" 'er releasing the 'gwasherth The washerfitimay removed alongjw-ith ther `balding cups 4s l21116.49

If it is necessary lamp-59 are relatively small and fragile. t

vintheembodiment illustrated in Eig. ,S-the base 5i] of the lamp is substantially entirely within l"the lshell 161i causing the' head of the .lamp 450 to extend outwardly` beyond the oterend -of-the""sbell 10a. Accordingly, the

The embodiment ofthe illuminated push button switch illustrated in Fig. 8 differs Vfrom lthe embodiment previously described primarily in the location of the lamp Sti and inthe configurations of the electrical connecting` terminals 62a Vand 63a, the contact lingers 26a and 27a through the push button 32a and undesirable shadows are not cast on the outer end ofthe button 32a.

(b) Due to the location of the head of the lamp Vv't as welljas the configuration of the outer end olithebutton 32a, the' push button 32a is more readily visible particularly at large angles with respect tothe axis of the button 32a andthe shell 10a. l l

(c) There is greater amount of clearance between the contact lingers 26a and 27a and the lamp 56 particuu larly at the free ends of the iingers 26a and 27a permitting greater tolerances in the vmanufacturefand assembly of l the"` various parts of the switch. It is to be noted that it is particularly important that thelampSt) not be moved`V during operation ofthe pushbutton 32a because the electrical connecting leads extendi-ngfrornV thebase of the gesoffen translucent end portion 34a of the button 32ais bowed outwardlyin order to accommodate the head of the lamp 50.

The lower ends of the fingers 26a Vand 27a, that is the ends which are attached to the plate 30a, are spaced farther apart than the corresponding ends of the fingers 2.6 ,and 27 illustrated in Figs. 1-7. In order to permit the-contact lingers 26a and 27a to pass through the open# ings in the insulating washer 39, the shell a, the friction nger member 11a and the washer 40, the intermediate portions of the lingers 26a and 27a are bent inwardly as illustrated in Fig. 8. The connecting terminals 62a and 63a, one of which is illustrated in perspective in Fig: 9, are provided with inwardly extending projections 83 and 84 having contact surfaces 85 and 86 thereon which extend at an acute angle withv respect to the paths of movement of the fingers 26a and 27a and which are slidably engageable with the free ends of the contact lingers 26a and 27a.

The contact iingers 26a and 27a have projections extending transversely to the length thereof, such as prou jections v44a and 46a, which engage the insulating washer in when the push button 32a is released andy hence, which function in the same manner as the projections Vi3- 46 on the contact ngers of the embodiment shown in Figs. 1 7 to limit the movement of the push button 32a outwardly of the shell 13a. However, the push button 32a is provided with a pair of slots 87 and 8S which are closed at their ends and which receive lingers or tabs 89 and 9h struck inwardly from the shell 13a. The lengths of the `slots 87 and 88 are such that the button 32a may be fully depressed, as illustrated in Fig. 8, and are such that the ends of the ingers 89 and 9G may engage the end walls of the slots 87 and 88 when the button 32a is fully released. Thus, the fingers 89 and 90 limit the outward movement of the button 32a and provide additional means for limiting movement of the button 32a outwardly of the shell 13a. Such additional means for limiting the outward movement of the button 32a may be used in addition to the above-described projections on the free ends of the contact lingers or may be .used in place thereof both in the embodimentshown in Fig. 8v and in the other embodiments described in this specification and illustrated in the drawings. Y Y

The embodiment of the inventionY illustrated in Fig.

f l() differs from the preceding embodiments primarily in the coniiguration'of the terminals 62b and 63h, the' closure member 74b, the insulating washer 4Gb and the lamp holding clips` iThe closure member Mb may be a simple washer of insulating material having apertures therein for receiving the-securing tabs 16 and 17 and for permittingl passage V.of tubular securing rivets, suchk as the tubular rivet91 therethrough, which tubular rivets 'secure the connecting terminals 62b and 63h and the lamp holding-clips, such as clip 48b,.to the closure member 74h. The closure member 74b cooperates with a second insulating Washer 92 tok seal the inner end of the assembly against dirt and moisture and the washer 92 may be a separate member as shown o r may be integral-with the closure' member washer Mb. r The washer 92 has a pair of sloping surfaces 93V and 94 against which the contacts 95 and 96 bear, the contacts 95'and 95 being slidably engageable with the free ends of the. contact fingers Zeb and 27h when the button 32h is depressed. Y

The embodiment shown in Fig. l0 comprises a pair of lamp holding clips both of which Vare identical and one of which is illustrated in detailn Figs. 11 and Yl2. The

V lamp.holding clip 48h shown in Figs. Y11V and 12 preferably is made ot metalandcomprisesl a resilient. lamp engaging arms 97; aninwardly extendingY portion 98 which engages the'neck of the lamp 59,' an outwardly extendingsecuring portion 99 having an aperture lid@ therein permitting the passage of the securing rivet V9 1 therethrough and an, inwardly extending contact portion 95.5. The innersurface ofgthecontact portion or contact` vengages the surface of the contact When the lamp holding clips and the lamp 50 are assembled with the Washer 92, the closure member 74h and the terminals 62b and 63b, the leads of the lamp 50 which connect to the lament thereof are disposed between the portion 99 and the washer 92. It will be noted that `when these parts are so assembled, they form a subassembly and may be assembled with or removed fromv the switch as a unit. Furthermore, it willV be noted that such'unit may be removed from the switch without releasing kthe free ends of the contact fingers 26b and 2711 from their engagement with the'insulating washer 40h.

The embodiment illustrated in Fig. 13 is similar to the embodiment illustrated in Fig. 8 but because of the disposition of the lamp 50 therein, the embodiment of the switch illustrated in Fig. 13 may be made shorter than the embodiment ofthe switch illustrated in Fig. 8. The embodiment illustratedv in Fig. 13 differs from the em-Y bodiment illustrated in Fig. 8 primarily in the configuration of the terminals`62c and 63C, -the member 74C and the lampholding clip 48C, only one lamp holding clip 48o being required. i

' The member 74C may be a simple washer of insulating material having apertures therein for receiving the securing tabs 16 and 17, apertures permitting the passage of the tubular securing rivets, such as the rivet 91C, therethrough Vand anaperture permitting the passage of the contact lingers 26C and 27cgand the base of 'the lamp 50 therethrough; Duejto the presence of the last mentioned aperture in the member 74,'the innerend of the switch assembly Yis notY sealedv against dirt and moisture but the aperture permits the circulation'of air into the `sh`el1 13 and around the larripSand, therefore, assistsfin the cooling of the lamp 5l).

The lamp holding clip 48o isillustrated inl greaterdetail in Fig. 14 Vand comprises a pair of resilient arms 101 and 102 which extend more than half-way around the pheriphery of the lamp 50. The clip 48e also comprises a pair of resilient arms 103" and 104 which engage the neckof the lamp Sil'andV which extend more than halfway around the periphery of the neck of the lamp S0. An outwardly extending securing portion 105 has any aperture 106V therein which permits the passageof the securing rivet '91e Vtherethrough' 'and has teeth 107 and 16S thereon which bite into the lower surface of the member 74e so asV toprevent rotation of the clip 48C around the rivet 91C. Preferably, the clip 48C `is made of metal such as beryllium'copper.

' The embodimentillustrated in Fig. 13 is similar to the embodiment Yillustratedin Fig. 10 in that when the terminals 62o and 63e, the member 74C, the clip lxc and the`1arnp50 are assembledby means of the rivet V91m, as well as by means of a similar rivet (not shown) which secures `the terminal dcto the 'member 74o, these parts form a single `u`nitwhich may be assembled with or removed from the remainder ofthe switch without requiring disengagement of 'the contact fingers 26C and,

27e' fromthe washer 40c;f Thus, the embodiment of Fig.V 13, like the embodiment of Fig. 10, comprises two separable units, one of whichincludes the lamp S0.

Having' thus described our invention with particular reference to the preferred form thereof and having shown andy described certain modifications= it will be obvious to .thosev skilled in the art to which th"invent ion pertains,

yafter understanding ourinvention, that various changes 70.- and other modilications may bevmade therein without departing from the spirit Vand scope of our invention, as

denedbythe claims appended thereto.` Y f What is claimed as new and desired to be securedby Letters Patent is:

' 1.-An illuminated push Y button switch comprising a tubularrshell having opengends, one of said 'endsA beingan' lesosa inner end and the other being an outer end, a tubular button having a light transmitting outer end, said button being mounted in said shell with the exterior thereof in sliding engagement with the interior of said shell and with said outer end` of said button adjacent said outer end of said shell, a pair of flexible conductive, spaced contact fingers mounted on said button and movable therewith, said fingers extending longitudinally inside of said shell and having their free ends spaced from said outer end of said Ashell in the direction of said inner end of said shell, spring means acting between said shell and said lingers and urging said free ends of said fingers toward said outer end of said shell, means limiting the movement of said fingers in the direction in which `they are urged by said spring means for maintaining said fingers and said button within said shell, a lamp having a head and a base and mounted with said head and said base disposed longiv tudinally of said shell, said lamp also being mounted with the head thereof in a fixed position within and in relation to said shell and nearer to said outer end of said button :than said base and being adapted to lit between said fingers, said button, said lingers and said spring means being disposed with respect to said lamp so as to provide a light transmitting path between the head of said lamp and said outer end of said button, and said fingers and said button being movable with respect to both said lamp and said shell, a closure member mounted on said shell adjacent said inner end of said shell, a pair of electrical connecting terminals mounted on said closure member, means electrically connected to said terminals and slidably engageable with said ends of said fingers when said button is moved inwardly of said shell, means electrically connecting said terminals with the terminals t of said lamp, and means maintaining said closure member in assembled relationship with said shell.

2. An illuminated push button switch comprising a pair of units, one of said units comprising aV tubular shell having open ends, a cup-like button having its closed end formed by translucent material and mounted with its open end facing into said shell and with its exterior in sliding engagement with the interior of said shell, a pair of spaced and electrically connected, conductive, contact fingers mounted on `said button and Vextending longitudinally within said shell, spring means acting between said shell and said fingers and urging said fingers away from said one end of said shell, and an insulating washer member mounted against said one end of said shell and having an opening therein smaller in size than the opening in said one end of said shell, and means for limiting the movement of said fingers in the direction. in which they are urged bypsaid spring means, the other of said units'comprising anon-conducting closure member having a pair of electrical connecting terminals mounted on one side thereof, and means electrically connected to said Vterminals for slidably contacting` said ends of said lingers,

with said closure member adjacent said washer member Vand with saidlarnp within said yshell and said button and Vbetweentsaid fingers`,"and means formaintaining said units in assembled relationship.

' f A3. An illuminated push button switch 4comprising aA .pair ofrtunits, one of said units comprising .a tubularshell having open ends, -a Acupalike button having its Aclosed end formed by translucent materialand mounted with its open endfacing-into said shell and with '-its, exterior in sliding engagement:withV the interior of said shell, a

pair of spaced and electrically'connected, conductive," contact lingers mountedfon 'said button and extending longitudinally within said shell, spring means acting 'be ltween said shell and said lingers and urging said fingers away from' said one end of said shell, and an insulating washer mounted against said one end of said shell and having van opening therein smaller in size than the opening in said one end of said shell, and meansV for limiting the movement of said ngers in the direction in which they are urged by said spring means, the other of said units comprising a non-conducting closure member having a pair of electrical connecting terminals mounted on one side thereof', a lamp having a head and a base and mounted on said member and extending from the opposite side thereof with said base nearer said member than said head, at least one holding clip mounted on said member and engaging said lamp for holding said lamp in a ixed position in relation to said shell, means electrically connecting the terminals of said lamp to said connecting terminals, and means electrically connected to said terminalsfor `slidably contacting said ends of said fingers, said other of said units being adapted to be mounted with said closure member adjacent said washerand with said lamp within said shell and said 'button and between said fingers, and means for maintaining said units in assembled relationship.

4. An illuminated push button switch comprising a hollow cylindrical shell having one outward open end and having a centrally disposed inner opening i-n the other inward end thereof, a lamp mounted centrally of said shell and extending longitudinally in the interior of said t shell, a pair of longitudinally movable, conductive, exible contact fingers mounted Von opposite sides of said lamp withY their inner ends extending through said inner opening, saidfing'ers being movable with respect to said lamp and the outer ends or" saidfingers being joined by a conductive plate 'having a central opening therein permitting the passage of the head of said lamp therethrough, an operating button comprising a hollow cylindrical portion closed at one end by a non-conducting, translucent outer portion, said button being mounted with the exterior of said cylindrical portion in axial sliding engagement with the interior of said shell and with Asaid outer portion spanning said outward open end,

said cylindrical portion encircling said fingers and said.

lamp and said plate being mounted in frictional engagement with said button to cause said fingers to move with saidibutton, a spring acting between said shell and said plate to urgersaid lingers and said button outwardly of said, shell, an insulating washer mounted adjacent the inner end andhaving a portion exteriorly of said` shell and restrained by said inner end, ,said washer being mounted co-axially with said shell and having a central opening of a size smaller than said inner opening, said washer having a pair of oppositely disposed apertures therein` for receiving the inner ends of said contact fingers, said inner ends of said contact fingers having projections thereon engageable with said washerffor limiting the outward longitudinal movement of said contact fin- Y ysurfaces when` said button is :moved inwardly of said shell', a non-conducting closuremember mounted against said washer and in engagement with said terminals `and a' pair of securing4 tabs secured at one end to said shell and engaging said closure member and thereby holding said closure member, `said terminals and said washer-in assembled relationshipwith said shell.

asesores 5. An illuminated push button switch comprising a cup-like shell having one outward open end and having a centrally disposed inner opening in the other inward end thereof, Ya lamp mounted centrally of said` shell and extending longitudinally in the interior of said shell, a pair of longitudinally movable, conductive, fiexible contact fingers mounted on opposite sides of said lamp with their inner ends extending through said inner opening, said fingers being movable with respect to said lamp and the outer ends of said fingers being joined by a conductive plate having a central opening therein permitting the passage of the head of said lamp therethrough, an operating butto-n comprising a hollow cylindrical portion closed at one end by a non-conducting, translucent outer portion, said button being mounted with the exterior of said cylindrical portion in axial sliding engagement with the interior of said shell and with said outer portion spanning said outward open end, said cylindrical portion encircling said fingers and said lamp and said plate being mounted in frictional engagement with said button to cause said fingers to move with said button, a spring encircling said fingers and said lamp and mounted between said fingers and the interior of said cylindrical portion, said spring' than said inner opening, said washer encircling'the inner ends of said contact fingers and having a pair of oppositely disposed apertures therein Vfor receiving the inner ends of said contact fingers, said inner ends of said contact fingers having projections thereon engageable y with said washer for limiting the outward longitudinal movement of said contact fingers, a pair of lamp holding clips secured to said washer, said clips having lamp engaging portions extending through said inner opening into said shell and engaging said lamp, said portions beingr disposed on opposite sides of said lamp and intermediate said contact fingers, a pair of electrical connecting terminals extending away from the inner end of said shell, said terminals each being electricallyrconnected to a terminal of said lamp and having a portion forming aY contact surface extending at an acute angle with respect to the path of movement of the inner end of a contact finger, said inner ends of said contact fingers being slidably engageable with said contact surfaces` when said button is moved inwardly of said shell, a non-conducting closure `member mounted against said second washer and mounted in engagement with said terminals, said closure member also having a pair of securing tab apertures therein but otherwise being substantially imperforate, andY a pair of securing tabs secured at one end to said shell and passing through said securing tab apertures, said tabs being in engagement with said closure member and holding said closure member,` and said washer in assembled relationship with said shell.

6. An illuminated push button switch comprising aA cylindrical, metal hollow shell having a first rim extending radially outwardly from one outward open end thereof and having a second. rim extending radially inwardly from the other inward end thereof,'said second rim ydefining an inner openingrin said shell, a larnp mounted coaxially with said shell and extending axially through said inner opening andv into the interior of said shell, a pair of Vaxially movable, conductive, flexible contact fingers' mounted on opposite sides of said lampswith their inner` ends lextending through said inner opening, said fingers being movable with respect to said lampy and theouten l2 said button b'eing mounted with the exterior of said cylindrical portion in axial sliding engagementwith the interior of said'- shell and with said outer portion spanning said outwardopenY end, 'said cylindrical portion encircling said fingers and said lamp and said plate being mounted infrictional engagement with the interior of said button to cause said fingers to move with said button, a spring encircling said fingers and said lamp and mounted between vsaid fingers and the interior of said cylindrical portion, said spring acting between said shell and said plate to urge said fingers and said button outwardly of said shell, an insulating washerrmounted adjacent the inner( end and exteriorly of said shell, said washer being mounted co-axially with said shell and having a central opening of a size smaller than said inner opening, said washer encircling the inner ends of said contact fingers and the base of said lamp and having a pair of oppositely disposed apertures in said portion thereof for receiving the inner ends of said contact fingers, Vsaid inner ends of said contact fingers having projections thereon engageable with said washer for limiting the axial movement of said contactV fingers, a non-conducting closure member mounted against said washer, a lamp holding clip secured to said closure member, said clip having lamp engaging portionsk extending through said inner opening into said shell and engaging said lamp, said portions being disposed intermediate said contact fingers, a pair of electrical connecting terminals securedrto .said closure member and electrically connected to the terminals of said lamp, said connecting terminals having projections extending transversely to and forming lcontact surfaces extending at an acute angle with respect to the paths of movement of the inner ends of said contact fingers, said inner ends of said contact fingers being slidably engageable with said contact surfaces when said button is moved inwardly of said shell, -said closure member also having a pair of securing tab apertures therein, and a pair of securing tabs secured at one end'to said shell and passing through said securing tab apertures, said tabs being in engagement with said closuremember and holding said closure member and said washer in assembledrrelationship with saidl shell.

7. An illuminated push button switch comprising a cylindrical, metal, hollow shell having a first rim extending radially outwardly from one outward open end thereof and having a second rim extending radially inwardly from the other inward end thereof, said second rim dening an inner opening in' said shell, a lamp mounted co-axially with said shell-and extending axially through said inner opening and into the interior of said shell, the base of said lamp extending exteriorly of said shell, a pair of axially movable, conductive, flexible contact fingers mountedv onyoppo'site sides of said lamp with their linner ends extending through said inner opening, said fingersj beingfmovable with respect to said lamp and the outerends of said fingers being joined by a exible conductive platecrhaving a central opening therein permitting Vthe passage of the head of said lamp therethrough, an operating button lcomprising a hollow cylindrical portion closed at one end by a non-conducting, translucent outer .portion,.said button being mounted with the exterior of said cylindrical portion in axial sliding engagement with the interior of said shell and with said outer portion spanning said outward openend, said cylindrical 'portion encircling said fingers and said lamp and saidplate being mountedin frictional engagement with the interior of said cylindrical portion to cause said' fingers to move with saidbutton, a first insulating washer mounted within said shell against said second rim,'said washer encircling Said fingers and said.lamp, a helical spring encircling said fingers and'said lamp andmountedbetweensaid fingers and the interior of 'said'cylindricallportiom said spring bearing,- at one end, againstrsaid washer and, at the other end, against said plate 4tojurgesai'd fingers and said but ton 'outwardly ofwsaid ishell, a' frictionv finger member aasofa'sa 13 mounted against the inner end of said shell and having a plurality of friction fingers extending adjacent the exterior of said shell from said inner end toward said first rim, a second insulating washer mounted adjacent the inner end and exteriorly of said shell of said second washer being mounted co-axially with said shell and having a central opening of a size smaller than said inner opening, said second washer encircling the inner ends of said contact lingers and the base of said lamp and having a pair of oppositely disposed apertures in said portion thereof for receiving the inner ends of said contact 1ingers, said inner ends of said contact fingers having proa jections thereon engageable with said second washer for limiting the axial movement of said contact fingers, a non-conducting vclosure member mounted against said second washer, a lamp holding, conductive clip secured to said closure member, said clip having lamp engaging -portions extending through said inner opening into said shell and engaging said lamp, said portions being disposed intermediate said contact fingers, a pair of elec-y trical connecting terminals secured to said closure member and electrically connected to the terminals of said lamp, said connecting terminals having projections extending transversely to and forming contact surfaces extending at an acute angle With respect to the paths of movement of the inner ends of said contact fingers, said inner ends of said contact fingers being 4slidably engageable with said contact surfaces when said button is moved inwardlyof saidV shell, said closure member also having a pair of securing'tab apertures therein, and a pair of securingtabs secured at one end to said shell and passing through said securing tab apertures, said tabs being in lengagement with said closure member and holding said closure member, saidv second washer and said friction finger member in assembled relationship with said shell.

8. An illuminated push button switch comprising a cylindrical, metal, hollow shell having a first rim extending radially outwardly from one outward open end thereof and havinga second rim extending radially inwardly from the other inward end thereof, said second rim defining Van inner opening in said shell, a lamp mount- `ed co-axially with saidshell and extending axially through said inner opening and into the interior of said shell,

"a pair of axially movable, conductive, flexible contact fingers mounted on opposite sides of said lamp with their iinnerrendsextending through said inner opening, said` fingers ,beingV mvable withrespect to said lamp and the outerA endsl of said fingers being joined by a conductive plate having a central opening therein permitting the passage'ofthehead of said lamp therethrough, an operatingfbutton comprisinga hollow cylindrical portion closed ',:at 4one end by a non-conducting, translucent outer port tion, said button being `mounted with the exterior of said cylindrical portionfinaxial sliding engagement with the .interior of said shell and with said outer portion spanning said outward open end, said cylindrical portion encircling said fingers and said lamp Vand said plate being mountedin frictional engagement with the interior of said button portion to cause said fingers to move with said button, a spring encircling said fingers and sa1d lamp and mounted betweensaid fingers and the interior of s aid cylindrical portion, `said spring acting `between' said shell ,and said `plate to urge 'said fingers and said button outwardly of said shell, an` insulating washer mounted `adjacent the inner end andrexteriorly of said' shell` and having a portion extending interiorly ofsaid shell,` said' isecond washerbeingmo'unted co-axially with said shell extending at an acute angle with respect to the paths of movement of the inner ends of said contact fingers, said inner ends of said contact fingers being slidably engage able with said contact surfaces when said button is moved inwardly of said shell, a pair of electrical connecting terminals secured to said closure member and electrically connected to said clips, said closure member also having a pair of securing tab apertures therein but otherwise being substantially imperforate, and a pair of securing tabs secured at one end to said shell and passing through said securing tab apertures, said tabs being in engagement with said closure member and holding said closure member and said second washer in assembled relationship with said shell.

9. An illuminated push button switch comprising a cup-like, metal, hollow shell having one outwardopen end and having a centrally disposed inner opening in the other inward end thereof, a lamp mounted centrally of said shell and extending longitudinally through said inner opening and into the interior of said shell, a pair of longitudinally movable, conductive, flexible contact fingers mounted on opposite sides of said lamp with their inner ends extending tllough said inner opening, said fingers being `movablerwith respect to said lamp and the outer ends of said fingers 'being joined by a conductive plate having a central opening therein permitting the passage of the head of said lamp therethrough, an operating button comprising a hollow cylindrical portion closed -at one end by a non-conducting, translucent outer portion, said button being mounted with the exterior of said cylindrical portion in axial sliding engagement with the interior of said shell and with said outer portion spanning said outward open end, saidcylindrical portion encircling said fingers and said lamp and Asaid plate being mounted in frictional engagementwith said button to cause said fingers to move with said' button, a spring encircling said fingers and said lamp andfmounted between said fingers and the interior of said cylindrical portion, said spring acting between said shell and said plate to urge said iingers and said button outwardly of said shell, an insulating washer mounted adjacentthe inner endbut exteriorly of said shell, said washer being mounted co-axially with said shell having a central opening of a size Vsmaller than said inneropening, said washer encircling the inner Vends of V'said contact fingers and having a pair Vof op- 'positely disposed apertures therein for receiving the inner Vends of said contact fingers, said inner ends of said contact fingers having projections thereon engageable with said washer for limiting the outward longitudinal movement of said contact fingers, a pair of lamp holding clips secured-to said washer, said clips having'larnp` engaging'portions extending through said `inner opening into said shell andnengaging said lamp, said portions being i disposed on opposite sides of said lamp and intermediate and having a' central openingofra size smaller than said inner opening, saidwasher encircling the inner ends'of v said contact fingers and 'theba'se of saidlamprand hav- .v a pairjof oppositely disposed apertures in said por l f ltion thereof for vreceiving the innerends of said contact Y fingers, said innen-3, ends` 'ofV said contact fingers having prQCtions`-thereon engageable withjsaid Vwasher for'ilimtill'g` lhei'utwardiaxialinovement ofsaid,contactiingerS,

said'contact fingers, a pair of electrical connecting terminals extending axially away from the. inner end of said shell,` said lterminalsjeach having U-shaped ends, one

leg of each said rU-shaped end being mounted in engagement with one of said clips, the portionl of each terminal v intermediate `said legs forming a contact surface extendying atan acute angle with respect to the path of move. ment `of the inner end Vofa .contactfingen said inner ends `of said contact fingers beingslidably engageable with saidfrcontact surfaceswhensaid button is moved' inwardlyofrsaid shell,a non-conductingclosure member 1v, mounted against said second washer and having apertures therein permitting said terminals to extend therethrough,

said closure member also having a pair of securing tab apertures therein but otherwise being substantially imperforate, and a pair of securing tabs secured at one -end to said shell and passing through said securing tab apertures, said tabs being in engagement with said closure member and holding said closure member, said terminals and said Washer in assembled relationship with said shell.

10. An illuminated push botton switch comprising a cylindrical, metal, hollow shell having a first rirn extending radially 'outwardly trom one outward open end thereof and having a second rim extending radially inwardly Afrom the other inward end thereof, said second rim defining an inner opening in said shell, a lamp mounted co-axially in said shell, a pair of axially movable, conductive, flexible contact fingers mounted on opposite sides of said lamp with their inner ends extending 'through said inner opening, said lingers being movable with respect to said lamp and the outer ends of said fingers eing joined bya flexible, conductive plate having a central opening therein permitting the passage of the head of said lamp therethrough, an operatingV button comprising a hollow cylindrical portion closed at one end by a non-conducting, translucent outer portion, said button being mounted with the exterior of said cylindrical portion in axial sliding engagement with the interior of said shell and with said outer portion spanning said outward open end, said cylindrical portion encircling said fingers and said lamp and said plate being mounted in frictional engagement with the interior of said cylindrical portion to cause said fingers to move with said button, a first insulating washer mounted'within said shell against said second rim, said washerencircling said fingers and said lamp, a helical spring encircling said fingers and said lamp and mounted between said fingers and the interior of said cylindricalportion, said spring bearing, at one end, against said washer and, at the other end, 'against said plate to urge said fingers and said button outwardly of said shell, a friction finger member mounted against the inner end of said shell and having a plurality of friction fingers extending adjacent the exterior of said shell from said inner endrtoward said first rim, a second insulating Washer mounted adjacent the inner vend but exteriorly of said shell, said second washer being mounted co-axially with said shell and having a central opening of a size 'smaller than said inner opening, said second washer encircling the inner ends of said contact lingers and having a pair of oppositely disposed apertures therein for receiving the inner ends of said contact iingers, said inner ends of said contact fingers having projections thereon engageable with said second washer for limiting the axial movement of said contact fingers, a pairof lamp holding, conductive clips secured to saidsecond washer, the terminals of said lariipbeing electrically connected t-ofsaid clips, said lclips having lamp engaging portions extending throughsaidl inner vopening into said shell and engaging said lamp, said clips being disposedV on'opposite sides of said lamp and intermediate said fwith'said second Washer, each terminal having a projection intermediate said legs forming a contact-:surface v' extending towardthe other terminal/and extending at ana-cute angle withA respect to the path vofrnove'rnent of y the inner endv of a contact finger,v said inner. ends of said contact fingersbeing slidably engageable ,Withsaid contactsuraces when said button is moved inwardly-of said shell,` anon-conducting closure member mountedagainst :said second washer* and having apertures therein permit- ,ting said connecting terminals to. extendiftherethrough, Y We said closure; member'also'having fa pair of securingtab apertures therein but otherwise being substantially imperforate, and a pair of securing tabs secured at one end to said shell and passing through said securing tab apertures, said tabs being in engagement with said closure member and holding said closure member, said terminals, said second Washer and said friction iingermember in assembled relationship with said shell. i

. 11. An illuminated push button switch comprising a cylindrical, metal, hollow shell having a rst rim extending radially outwardly from one outward open end thereof and having a second rim extending radially inwardlyvzfrom the other inward end thereof, said second rim defining a central inner opening. in said shella lamp mounted co-axially with said shell and extending axially through said inner opening and into the interior of said shell, a pair of axially movable, conductive, exible contact fingers mounted on opposite sides of said lamp with their inner ends extending. through said inner opening, said fingers being movable with respect to said lamp and ythe outer ends 4of said fingers being joined by Va conductive plate having a central opening'therein permitting the passage of the head of said lamp therethrough, an operating button comprising a hollow cylindrical portion closed at one end by a non-conducting, translucentrouter portion, said button being mounted with the exterior of said cylindrical portion in axial sliding engagement with the interior of said shellV and with said outer portion spanning said outward open end, said cylindrical portion encircling said ngers and said lamp and saidplate being cent the 'inner end but exteriorly of said shell, said second Washer being mounted co'axially with said shell and having a central opening of a s'ize'smaller than said inner opening, said second washer encirclingY the inner ends of said contact fingers and having a pair of oppositely disposed apertures therein #for receiving the inner` ends of said contact fingers, said inner ends of said contact lingers having projections thereon engageable with said second washer for limiting the axial movement of said contact fingers, a pair of lamp holding,-conductiye clips secured to saidsecond washer, said clips having lamp engaging portions vextending through said innerjopeninglinto said shell and engaging said lamp, said portions being disposed on opposite sides of 4said Vlamp and intermediatesaid contact fingers, a pair of electrical connecting terminals extending away rfrom lthe inner end ofk said shell, said terminals* each having U-shaped ends, one leg of each said VUlshaped end kbeing mounted in engagement-,with one of said clips and the other leg, Vin engagement with said second washer, the jportion of each terminal intermediate said legs forming a'contact surface extending at an acute angle with respect to the path Vof movement of the inner endofa contact ynger, saidlinner endsiof saidfcontact fingers'being slidably engageable withsaid contactsurn VVfaces when said button is movedinwardly Vof said shell, l

a nonf'c'onducting ,closure member mounted against` said second washerandhaning apertures therein permitting said terminals toextend-therethrough,,said closure meming through :said securing tabi apertures, saidirtaibsbeing i i said closure member, .saidtermina Ybei' also having a pairof securinggtab apertures therein but otherwise being vsubstantially-iinl'eiforate, and Ya pair of Vvsecuring tab's'secured atene. epd-to said shellj'and pass- Iin engageirientwith said closure-member Yand holding i nd'said vsecond washefvin assembiedfreiaaonshipwith ,ai siren,-

witch comprising i: a

4; i2; Aniiiumiiiatedzpush abuse' 17 hollow cylindrical shell having an open outer end and Ian opposite inner end, a button having a light transmitting y outer end, said button being mounted in said shell with v the exterior thereof in sliding engagement with the interior of said shell and with said outer end of said button adjacent said outer end of said shell, a conductive, contact tinger mounted in said shell and movable with said button, said finger extending longitudinally inside of said shell and having its'free end spaced from said outer end of said shell in the direction of said inner end of said shell, spring means acting between said shell and said nger and urging said free end of said finger toward said outer end of said shell, means limiting the movement of said finger in the direction in which it is urged by said spring means for maintaining said finger and said button within said shell, a lamp mounted with the-head thereof in a xed position within and in relation to said shell and adjacent said outer end of said button and with the base thereof remote from said outer end of said b'utton7 said button, said finger and said spring means being disposed with respect to said lamp so as to provide a light transmitting path between the head of said lamp and said outer end of said button, and said button and said nger being movable with respect to both said shell and said lamp, a member mounted on said shell adjacent said inner end of said shell, a pair of electrical connecting terminals mounted on said last-mentioned member, means electrically connected to said terminals and engageable with said end of said finger when said button is moved inwardly of said shell, means electrically connecting said terminals with the terminals of said lamp, and means maintaining said last-mentioned member in assembled relationship with said shell.

13. An illuminated -push button according to claim l2 in which said terminals have channels therein for receiving connecting wires andl further comprising means on said terminals for fastening wires to said terminals, said last-mentioned means overlying said channels for securing said Wires in said channels.

References Cited in the tile of this patent UNITED STATES PATENTS 1,686,506 Anthony Oct. 9, 192.8 1,842,524 Hansen Ian. 26, 1932 2,673,914 Sundt Mar. 30, 1954 2,802,082 Kalwo Aug. 6, 1957 2,823,271 Wagstaf Feb. 1l, 1958 2,863,028 Fraser et al. Dec. 2, 1958 2,914,705 Krystyan et al. Nov. 24, 1959 2,916,673 Maslin et al. Dec. 8, 1959 UNITED STATES PATENT oEEIcE CERTIFICATE OF CORRECTION Patent No. 2,980,784 April I8, l96l Howard C, Gohs et, al.,

It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should readas corrected below. t

Column l, lines 6l and 62, for requirement read requirements column 5, line 60, after "units" insert, of the column 17, line l, for "hollow cylindrical" read tubular Signed and sealed this 10th day of October 1961,

(SEAL) Attest:

. ERNEST W. SWIDER DAVID L. LADD Attesting Officer v Commissioner of Patents USCOMM-DC 

